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| Number | Title | Issue Date |
| 6829959 | Apparatus and method for moving a sensor over a workpiece The apparatus and method for moving a sensor over a workpiece includes a sensor, and an actuating member. The sensor, such as a non-destructive test sensor, is carried by the actuating member, and the actuating member is at least partially disposed within a housing.... | 12/14/2004 |
| 6494098 | Method of ultrasonic on-line texture characterization A sputtering target (24) under test is irradiated with an ultrasonic pulse (20). The ultrasonic pulse (20) has a wavelength in the sputtering target (24) in the range of the average grain size for the target (24) under test. Backscattering echoes (28) are... | 12/17/2002 |
| 5497661 | Method of measuring the delay of ultrasound in the pulse reflection method A delay time measurement method for ultrasound of the type wherein a testing head transmits an excitation pulse that is as close as possible to the shape of a shock wave and traverses a pretravel path until it reaches the object to be examined which has a... | 03/12/1996 |
| 5406850 | Method of non-destructively testing a sputtering target A method of quality control for targets intended for use in the sputtering process. A test parameter is established by immersing the target in a tank of liquid, irradiating the target with ultrasonic energy in the Rayleigh frequency range, and integrating... | 04/18/1995 |
| 4570486 | Ultrasonic thickness gauge circuit with transit path correction An ultrasonic thickness gauge circuit includes a dual transducer probe and a logic circuit for providing square wave signals whose duration is equal to the time interval between the ultrasonic signal entering a workpiece to be measured and the reception o... | 02/18/1986 |
| 4398420 | System for measuring the wall thickness of an object The wall thickness of an object is measured on the basis of three consecutive rear wall reflections caused by an ultrasonic wave impinging on the front wall of the object. The time intervals between, on the one hand, the first and second rear wall reflect... | 08/16/1983 |
| 4388830 | Method and apparatus for measurement of thickness utilizing ultrasonic pulses Method and apparatus are disclosed for measuring the thickness of a workpiece by periodically transmitting ultrasonic pulses into the workpiece, receiving ultrasonic echo pulses reflected from the bottom surface of the workpiece, measuring the period of t... | 06/21/1983 |
| 4261367 | Apparatus for measuring the axial length of an eye An apparatus for measuring the axial length of the eye is disclosed. The apparatus comprises circuitry for transmitting repetition ultrasonic pulses along the ocular axis of the eye and for receiving echo pulses reflected from the retina of the eye. The r... | 04/14/1981 |
